A Battle in Brunei

I was reading this interesting book entitled "THE EXPEDITION TO BORNEO OF H.M.S. DIDO FOR THE SUPPRESSION OF PIRACY: WITH EXTRACTS FROM THE JOURNAL OF JAMES BROOKE, ESQ., OF SARAWAK" written by Captain Keppel and published in 1846. There were many mentions of Brunei (Bruni or Borneo Proper as mentioned in the book). One was especially about the British and James Brooke wanting to keep Pengiran